linux----关于定位和查找
1.top --查看进程 2.su --临时切换用户命令 [root@tomato2 ~]# sudo su gongxijun [gongxijun@tomato2 root]$ 3.whoami ---我是谁 查看自己目前的用身份 [gongxijun@tomato2 root]$ whoami gongxijun 4.exit ---退出当前用户 [gongxijun@tomato2 root]$ exit exit [root@tomato2 ~]# 5.ifconfig ---查看用户的ip信息 mac,eth0 ,ip 等等信息 [gongxijun@tomato2 root]$ ifconfig eth0 Link encap:Ethernet HWaddr D0:50:99:17:37:1F inet addr:192.168.0.155 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::d250:99ff:fe17:371f/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1529804 errors:0 dropped:0 overruns:0 frame:0 TX packets:1549053 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:369566501 (352.4 MiB) TX bytes:1376257841 (1.2 GiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:31 errors:0 dropped:0 overruns:0 frame:0 TX packets:31 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2130 (2.0 KiB) TX bytes:2130 (2.0 KiB)
6.which --搜索命令(用于查找相关命令的位置) [gongxijun@tomato2 root]$ which cat /bin/cat 如果想要验证：
[gongxijun@tomato2 root]$ dir /bin/ alsaunmute dnsdomainname lsblk rview arch domainname lscgroup sed awk dumpkeys lssubsys setfont basename echo mail setserial bash ed mailx sh cat egrep mkdir sleep cgclassify env mknod sort cgcreate ex mktemp stty cgdelete false more su cgexec fgrep mount sync cgget find mountpoint tar cgset findmnt mv taskset cgsnapshot gawk nano tcsh chgrp gettext netstat touch chmod grep nice tracepath chown gtar nisdomainname tracepath6 cp gunzip ping traceroute cpio gzip ping6 traceroute6 csh hostname plymouth true cut ipcalc ps umount dash iptables-xml pwd uname date iptables-xml-1.4.7 raw unicode_start dbus-cleanup-sockets kbd_mode readlink unicode_stop dbus-daemon keyctl red unlink dbus-monitor kill redhat_lsb_init usleep dbus-send link rm vi dbus-uuidgen ln rmdir view dd loadkeys rnano ypdomainname df login rpm zcat dmesg ls rvi
7.locate ---文件搜索命令
查找一个 iptables的文件 ，然后就可以搜索出这么多文件。 [gongxijun@tomato2 root]$ locate iptables /bin/iptables-xml /bin/iptables-xml-1.4.7 /etc/alternatives/bin-iptables-xml.x86_64 /etc/alternatives/iptables.x86_64 /etc/alternatives/man-iptables-restore.x86_64 /etc/alternatives/man-iptables-save.x86_64 /etc/alternatives/man-iptables-xml.x86_64 /etc/alternatives/man-iptables.x86_64 /etc/alternatives/sbin-iptables-multi.x86_64 /etc/alternatives/sbin-iptables-restore.x86_64 /etc/alternatives/sbin-iptables-save.x86_64 /etc/rc.d/init.d/iptables 在使用locate查找文件是，也可以使用星号表示所有字符，点号表示所有单字符。
举列子： 要查找所有以字母ca开头的文档
[gongxijun@tomato2 root]$ locate *a
/var/lib/yum/yumdb/z/b8019061884a679c3b9b867b44c7b9c64182240d-zip-3.0-1.el6- x86_64/checksum_data /var/log/sa /var/log/samba [gongxijun@tomato2 8. 手动更新数据库 --- updatedb 9. whereis ----特殊文件搜索命令 [gongxijun@tomato2 root]$ whereis cat cat: /bin/cat /usr/share/man/man1/cat.1.gz /usr/share/man/man1p/cat.1p.gz 10. apropos --- 关键字搜索命令 [gongxijun@tomato2 root]$ apropos process